ISO INTERNATIONAL STANDARD

Transcription

1 INTERNATIONAL STANDARD ISO Second edition Safety and control devices for gas burners and gas-burning appliances Particular requirements Part 1: Automatic and semi-automatic valves Dispositifs de commande et de sécurité pour brûleurs à gaz et appareils à gaz Exigences particulières Partie 1: Robinets automatiques et semi-automatiques Reference number ISO :2012(E) ISO 2012

2 ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel Fax copyright@iso.org Web Published in Switzerland ii

3 Contents Page Foreword... v Introduction... vi 1 Scope Normative references Terms and definitions Classification Classes of control Groups of controls Test conditions Construction General Construction requirements Materials Gas connections Performance General Leak-tightness Torsion and bending Rated flow rate Durability Functional requirements Endurance EMC/Electrical requirements Protection against environmental influences Variations in supply voltage Short-term voltage interruptions and drops Variations in supply frequency Surge immunity test Electrical fast transient/burst Immunity to conducted disturbances Immunity to radiated fields Electrostatic discharge immunity test Test for immunity to power-frequency magnetic field Electrical requirements Electrical components Marking, installation and operating instructions Marking Installation and operating instructions Warning notice Annex A (informative) Leak-tightness test - Volumetric method Annex B (informative) Leak-tightness test - pressure-loss method Annex C (normative) Conversion of pressure loss into leakage rate Annex D (normative) Test for immunity to power-frequency magnetic fields Annex E (normative) Specific regional requirements in European countries iii

4 Annex F (normative) Specific regional requirements in Canada and the USA...32 F.1 General...32 F.2 Additional requirements and modifications...32 Annex G (normative) Specific regional requirements in Japan...34 G.1 General...34 G.2 Additional requirements and modifications...34 Bibliography...36 Figures Figure 1 Balanced valve with two ports... 8 Figure 2 Balanced valve with one port... 9 Tables Table 1 Test pressure Table 2 Sealing force requirements Table 3 Operating cycles Table 4 Operating cycles for automatic shut- off valves for cookers Table G.1 Operating cycles iv

5 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO was prepared by Technical Committee ISO/TC 161, Control and protective devices for gas and/or oil burners and appliances. This second edition cancels and replaces the first edition (ISO :2006), which has been technically revised. In particular, the following has been changed: a) integration of non electrical requirements from IEC ; b) integration of electrical requirements from IEC which are unalterable for valves; c) introduction of further classifications for valves; d) introduction of requirements and tests for balanced valves; e) introduction of requirements and tests for valves containing electrical components in the gas way. ISO consists of the following parts, under the general title Safety and control devices for gas burners and gas-burning appliances Particular requirements: Part 1: Automatic and semi-automatic valves Part 2: Pressure regulators Part 3: Gas/air ratio controls, pneumatic type Part 4: Valve-proving systems for automatic shut-off valves The following parts are under preparation: Part 5: Manual gas valves Part 6: Thermoelectric flame supervision devices Part 7: Pressure sensing devices Part 8: Multifunctional Controls v

6 Introduction This part of ISO is designed to be used in combination with ISO This part together with ISO establishes the full requirements as they apply to the product covered by this International Standard. This part adapts ISO 23550, where needed, by stating "with the following modification", "with the following addition", "is replaced by the following" or "is not applicable," in the corresponding clause. In order to identify specific requirements that are particular to this part, that are not already covered by ISO 23550, this document may contain clauses or subclauses that are additional to the structure of ISO These clauses are numbered starting from 101 or, in the case of an Annex, are designated AA, BB, CC etc. In an attempt to develop a full International Standard, it has been necessary to take into consideration the differing requirements resulting from practical experience and installation practices in various regions of the world and to recognize the variation in basic infrastructure associated with gas and/or oil controls and appliances, some of which are addressed in Annexes E, F and G. This International Standard intends to provide a basic framework of requirements that recognize these differences. vi

7 ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel Fax copyright@iso.org Web Published in Switzerland ii

8 Contents Page Foreword... v Introduction... vi 1 Scope Normative references Terms and definitions Classification Classes of control Groups of controls Test conditions Construction General Construction requirements Materials Gas connections Performance General Leak-tightness Torsion and bending Rated flow rate Durability Functional requirements Endurance EMC/Electrical requirements Protection against environmental influences Variations in supply voltage Short-term voltage interruptions and drops Variations in supply frequency Surge immunity test Electrical fast transient/burst Immunity to conducted disturbances Immunity to radiated fields Electrostatic discharge immunity test Test for immunity to power-frequency magnetic field Electrical requirements Electrical components Marking, installation and operating instructions Marking Installation and operating instructions Warning notice Annex A (informative) Leak-tightness test - Volumetric method Annex B (informative) Leak-tightness test - pressure-loss method Annex C (normative) Conversion of pressure loss into leakage rate Annex D (normative) Test for immunity to power-frequency magnetic fields Annex E (normative) Specific regional requirements in European countries iii

9 Annex F (normative) Specific regional requirements in Canada and the USA...32 F.1 General...32 F.2 Additional requirements and modifications...32 Annex G (normative) Specific regional requirements in Japan...34 G.1 General...34 G.2 Additional requirements and modifications...34 Bibliography...36 Figures Figure 1 Balanced valve with two ports... 8 Figure 2 Balanced valve with one port... 9 Tables Table 1 Test pressure Table 2 Sealing force requirements Table 3 Operating cycles Table 4 Operating cycles for automatic shut- off valves for cookers Table G.1 Operating cycles iv

10 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO was prepared by Technical Committee ISO/TC 161, Control and protective devices for gas and/or oil burners and appliances. This second edition cancels and replaces the first edition (ISO :2006), which has been technically revised. In particular, the following has been changed: a) integration of non electrical requirements from IEC ; b) integration of electrical requirements from IEC which are unalterable for valves; c) introduction of further classifications for valves; d) introduction of requirements and tests for balanced valves; e) introduction of requirements and tests for valves containing electrical components in the gas way. ISO consists of the following parts, under the general title Safety and control devices for gas burners and gas-burning appliances Particular requirements: Part 1: Automatic and semi-automatic valves Part 2: Pressure regulators Part 3: Gas/air ratio controls, pneumatic type Part 4: Valve-proving systems for automatic shut-off valves The following parts are under preparation: Part 5: Manual gas valves Part 6: Thermoelectric flame supervision devices Part 7: Pressure sensing devices Part 8: Multifunctional Controls v

11 Introduction This part of ISO is designed to be used in combination with ISO This part together with ISO establishes the full requirements as they apply to the product covered by this International Standard. This part adapts ISO 23550, where needed, by stating "with the following modification", "with the following addition", "is replaced by the following" or "is not applicable," in the corresponding clause. In order to identify specific requirements that are particular to this part, that are not already covered by ISO 23550, this document may contain clauses or subclauses that are additional to the structure of ISO These clauses are numbered starting from 101 or, in the case of an Annex, are designated AA, BB, CC etc. In an attempt to develop a full International Standard, it has been necessary to take into consideration the differing requirements resulting from practical experience and installation practices in various regions of the world and to recognize the variation in basic infrastructure associated with gas and/or oil controls and appliances, some of which are addressed in Annexes E, F and G. This International Standard intends to provide a basic framework of requirements that recognize these differences. vi

12 ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel Fax copyright@iso.org Web Published in Switzerland ii

13 Contents Page Foreword... v Introduction... vi 1 Scope Normative references Terms and definitions Classification Classes of control Groups of controls Test conditions Construction General Construction requirements Materials Gas connections Performance General Leak-tightness Torsion and bending Rated flow rate Durability Functional requirements Endurance EMC/Electrical requirements Protection against environmental influences Variations in supply voltage Short-term voltage interruptions and drops Variations in supply frequency Surge immunity test Electrical fast transient/burst Immunity to conducted disturbances Immunity to radiated fields Electrostatic discharge immunity test Test for immunity to power-frequency magnetic field Electrical requirements Electrical components Marking, installation and operating instructions Marking Installation and operating instructions Warning notice Annex A (informative) Leak-tightness test - Volumetric method Annex B (informative) Leak-tightness test - pressure-loss method Annex C (normative) Conversion of pressure loss into leakage rate Annex D (normative) Test for immunity to power-frequency magnetic fields Annex E (normative) Specific regional requirements in European countries iii

14 Annex F (normative) Specific regional requirements in Canada and the USA...32 F.1 General...32 F.2 Additional requirements and modifications...32 Annex G (normative) Specific regional requirements in Japan...34 G.1 General...34 G.2 Additional requirements and modifications...34 Bibliography...36 Figures Figure 1 Balanced valve with two ports... 8 Figure 2 Balanced valve with one port... 9 Tables Table 1 Test pressure Table 2 Sealing force requirements Table 3 Operating cycles Table 4 Operating cycles for automatic shut- off valves for cookers Table G.1 Operating cycles iv

15 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO was prepared by Technical Committee ISO/TC 161, Control and protective devices for gas and/or oil burners and appliances. This second edition cancels and replaces the first edition (ISO :2006), which has been technically revised. In particular, the following has been changed: a) integration of non electrical requirements from IEC ; b) integration of electrical requirements from IEC which are unalterable for valves; c) introduction of further classifications for valves; d) introduction of requirements and tests for balanced valves; e) introduction of requirements and tests for valves containing electrical components in the gas way. ISO consists of the following parts, under the general title Safety and control devices for gas burners and gas-burning appliances Particular requirements: Part 1: Automatic and semi-automatic valves Part 2: Pressure regulators Part 3: Gas/air ratio controls, pneumatic type Part 4: Valve-proving systems for automatic shut-off valves The following parts are under preparation: Part 5: Manual gas valves Part 6: Thermoelectric flame supervision devices Part 7: Pressure sensing devices Part 8: Multifunctional Controls v

16 Introduction This part of ISO is designed to be used in combination with ISO This part together with ISO establishes the full requirements as they apply to the product covered by this International Standard. This part adapts ISO 23550, where needed, by stating "with the following modification", "with the following addition", "is replaced by the following" or "is not applicable," in the corresponding clause. In order to identify specific requirements that are particular to this part, that are not already covered by ISO 23550, this document may contain clauses or subclauses that are additional to the structure of ISO These clauses are numbered starting from 101 or, in the case of an Annex, are designated AA, BB, CC etc. In an attempt to develop a full International Standard, it has been necessary to take into consideration the differing requirements resulting from practical experience and installation practices in various regions of the world and to recognize the variation in basic infrastructure associated with gas and/or oil controls and appliances, some of which are addressed in Annexes E, F and G. This International Standard intends to provide a basic framework of requirements that recognize these differences. vi

17 ISO 2012 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel Fax copyright@iso.org Web Published in Switzerland ii

18 Contents Page Foreword... v Introduction... vi 1 Scope Normative references Terms and definitions Classification Classes of control Groups of controls Test conditions Construction General Construction requirements Materials Gas connections Performance General Leak-tightness Torsion and bending Rated flow rate Durability Functional requirements Endurance EMC/Electrical requirements Protection against environmental influences Variations in supply voltage Short-term voltage interruptions and drops Variations in supply frequency Surge immunity test Electrical fast transient/burst Immunity to conducted disturbances Immunity to radiated fields Electrostatic discharge immunity test Test for immunity to power-frequency magnetic field Electrical requirements Electrical components Marking, installation and operating instructions Marking Installation and operating instructions Warning notice Annex A (informative) Leak-tightness test - Volumetric method Annex B (informative) Leak-tightness test - pressure-loss method Annex C (normative) Conversion of pressure loss into leakage rate Annex D (normative) Test for immunity to power-frequency magnetic fields Annex E (normative) Specific regional requirements in European countries iii

19 Annex F (normative) Specific regional requirements in Canada and the USA...32 F.1 General...32 F.2 Additional requirements and modifications...32 Annex G (normative) Specific regional requirements in Japan...34 G.1 General...34 G.2 Additional requirements and modifications...34 Bibliography...36 Figures Figure 1 Balanced valve with two ports... 8 Figure 2 Balanced valve with one port... 9 Tables Table 1 Test pressure Table 2 Sealing force requirements Table 3 Operating cycles Table 4 Operating cycles for automatic shut- off valves for cookers Table G.1 Operating cycles iv

20 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO was prepared by Technical Committee ISO/TC 161, Control and protective devices for gas and/or oil burners and appliances. This second edition cancels and replaces the first edition (ISO :2006), which has been technically revised. In particular, the following has been changed: a) integration of non electrical requirements from IEC ; b) integration of electrical requirements from IEC which are unalterable for valves; c) introduction of further classifications for valves; d) introduction of requirements and tests for balanced valves; e) introduction of requirements and tests for valves containing electrical components in the gas way. ISO consists of the following parts, under the general title Safety and control devices for gas burners and gas-burning appliances Particular requirements: Part 1: Automatic and semi-automatic valves Part 2: Pressure regulators Part 3: Gas/air ratio controls, pneumatic type Part 4: Valve-proving systems for automatic shut-off valves The following parts are under preparation: Part 5: Manual gas valves Part 6: Thermoelectric flame supervision devices Part 7: Pressure sensing devices Part 8: Multifunctional Controls v

21 Introduction This part of ISO is designed to be used in combination with ISO This part together with ISO establishes the full requirements as they apply to the product covered by this International Standard. This part adapts ISO 23550, where needed, by stating "with the following modification", "with the following addition", "is replaced by the following" or "is not applicable," in the corresponding clause. In order to identify specific requirements that are particular to this part, that are not already covered by ISO 23550, this document may contain clauses or subclauses that are additional to the structure of ISO These clauses are numbered starting from 101 or, in the case of an Annex, are designated AA, BB, CC etc. In an attempt to develop a full International Standard, it has been necessary to take into consideration the differing requirements resulting from practical experience and installation practices in various regions of the world and to recognize the variation in basic infrastructure associated with gas and/or oil controls and appliances, some of which are addressed in Annexes E, F and G. This International Standard intends to provide a basic framework of requirements that recognize these differences. vi